Finding the Fourth Proportional to 30,878.18, 42,613.76 and 17,449.14

Step by Step Solution

1. Step 1: Write the proportion equation
   30,878.18 : 42,613.76 = 17,449.14 : x
2. Step 2: Convert to fraction form
   30,878.18/42,613.76 = 17,449.14/x
3. Step 3: Cross multiply
   30,878.18x = 42,613.76 × 17,449.14
4. Step 4: Simplify right side
   30,878.18x = 743,573,464.17
5. Step 5: Solve for x
   x = 743,573,464.17/30,878.18
6. Step 6: Final answer
   x = 24,080.87